<h4>我的教材</h4>
<div ng-hide="books.length">没有教材. <a ng-href="/#/addcourse">去增加教材</a></div>
<div class="panel panel-default" ng-repeat="book in books">
  <div class="panel-body">
    <a ng-href="/#/viewcourse/{{ book.id }}">{{ book.title }}</a>

    <span class="badge"></span>
  </div>
</div>
